package com.jwiki.app.rpcui.editor;

import org.eclipse.jface.text.IDocument;
import org.eclipse.jface.text.TextAttribute;
import org.eclipse.jface.text.presentation.IPresentationReconciler;
import org.eclipse.jface.text.presentation.PresentationReconciler;
import org.eclipse.jface.text.rules.DefaultDamagerRepairer;
import org.eclipse.jface.text.rules.Token;
import org.eclipse.jface.text.source.ISourceViewer;
import org.eclipse.jface.text.source.SourceViewerConfiguration;

public class XMLConfiguration extends SourceViewerConfiguration {
    private XMLTagScanner tagScanner;
    private XMLScanner scanner;
    private ColorManager colorManager;

    public XMLConfiguration(ColorManager colorManager) {
        this.colorManager = colorManager;
    }
    public String[] getConfiguredContentTypes(ISourceViewer sourceViewer) {
        return new String[] {
            IDocument.DEFAULT_CONTENT_TYPE,
            XMLPartitionScanner.XML_COMMENT,
            XMLPartitionScanner.XML_TAG };
    }

    protected XMLScanner getXMLScanner() {
        if (scanner == null) {
            scanner = new XMLScanner(colorManager);
            scanner.setDefaultReturnToken(
                new Token(
                    new TextAttribute(
                        colorManager.getColor(IXMLColorConstants.DEFAULT))));
        }
        return scanner;
    }
    protected XMLTagScanner getXMLTagScanner() {
        if (tagScanner == null) {
            tagScanner = new XMLTagScanner(colorManager);
            tagScanner.setDefaultReturnToken(
                new Token(
                    new TextAttribute(
                        colorManager.getColor(IXMLColorConstants.TAG))));
        }
        return tagScanner;
    }

    public IPresentationReconciler getPresentationReconciler(ISourceViewer sourceViewer) {
        PresentationReconciler reconciler = new PresentationReconciler();

        DefaultDamagerRepairer dr =
            new DefaultDamagerRepairer(getXMLTagScanner());
        reconciler.setDamager(dr, XMLPartitionScanner.XML_TAG);
        reconciler.setRepairer(dr, XMLPartitionScanner.XML_TAG);

        dr = new DefaultDamagerRepairer(getXMLScanner());
        reconciler.setDamager(dr, IDocument.DEFAULT_CONTENT_TYPE);
        reconciler.setRepairer(dr, IDocument.DEFAULT_CONTENT_TYPE);

        NonRuleBasedDamagerRepairer ndr =
            new NonRuleBasedDamagerRepairer(
                new TextAttribute(
                    colorManager.getColor(IXMLColorConstants.XML_COMMENT)));
        reconciler.setDamager(ndr, XMLPartitionScanner.XML_COMMENT);
        reconciler.setRepairer(ndr, XMLPartitionScanner.XML_COMMENT);

        return reconciler;
    }

}
